#include<stdio.h>
int main()
{
    int max(int a,int b);
    int a,b,c;
    printf("input 2 numbers:\n");
    scanf("%d%d",&a,&b);
    c = max(a,b);
    printf("the bigger is : %d\n",c);
    return 0;
}
int max(int a ,int b)
{    
    int c;
    if(a>=b)
    return c = a;
    else
    return c = b;
}